package two.chapter_1.c1_1;

import edu.princeton.cs.algs4.StdOut;

public class Ex1_1_16 {

    public static void main(String[] args) {

        StdOut.println(exR1(6));

    }



    private static String exR1(int n){
        if (n<=0)
            return "";

        return exR1(n-3)+n+exR1(n-2)+n;
    }




}
